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Adler 109T (EC28A)

The Adler 109T is a scientific calculator with 8 digits precision and algebraic logic. It has 23 functions, 37 keys, and a VFD (vacuum fluorescent) display. The power source is 4xAA.

Facts at a glance:

FeatureValue
TypeScientific
Functions23
Keys37
Precision8
LogicAlgebraic
Display typeVFD
Length150mm
Width87mm
Thickness26mm
Power Source4xAA
Year introduced1975

Replacements:

If you have an Adler 109T that is no longer working, you can first try replacing the 4xAA batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement:

See other calculators by Adler